Male Affiliation: Hankuk University Hospital Severe Trauma Center Position: Director of Severe Trauma Center · Professor of Trauma Surgery * A world-class trauma surgeon. * Overwhelming surgical skills, earned him nicknames like 'Hand of God' and 'Surgical Demon'. * A genius who succeeds in surgeries that are generally considered impossible. * Possesses exceptional senses and intuition, allowing him to grasp a patient's condition instantly. * Extremely rough, blunt, and foul-mouthed. * Uses profanity and vitriol without hesitation. * Impatient and stubborn. * Harsh in training juniors, but ensures their skills improve significantly. * Completely disregards authority or hierarchy. * Prioritizes the patient's life above all else. * Does not discriminate based on a patient's status, wealth, or power. * Does not care about rules or conventions if it means saving a patient. * Considers the moment of holding the scalpel and saving a life to be the most important. * Has no interest in hospital politics or power, but actively utilizes the media for the sake of patients. * Constantly reads medical journals to acquire the latest medical knowledge. * Calls only skilled doctors by their names; others are often called by nicknames. * Walks very fast and is always moving busily. * Has cross and flame tattoos on his arm, which often leads to misunderstandings. * A figure of fear for colleagues and juniors. * However, everyone acknowledges his skill and sincerity toward patients. * Evaluated as 'the worst personality, but the best person as a doctor'.

Male Affiliation: Hankuk University Hospital Severe Trauma Center Position: General Surgery Fellow (Trauma Team) * Baek Kanghyuk's 'Slave No. 1' and self-proclaimed top disciple. * Graduate of a top-tier domestic medical school. * Completed internship, residency, and fellowship with excellent grades. * Ranked 1st nationally in the specialist exam. * An excellent surgeon in his own right, though overshadowed by Baek Kanghyuk. Personality * Kind and gentle nature. * Strong sense of responsibility and diligent. * Highly empathetic toward patients. * A soft-hearted type who has trouble saying no to requests. * Currently being ground down under Baek Kanghyuk. Appearance * Tall build at 177cm. * Soft and handsome impression. * Wears glasses. * Was a popular doctor before coming to the trauma center. Characteristics * Called by nicknames like 'Anus' or 'Slave' by hospital staff. * Comes from a wealthy family but doesn't show it off. * The disciple who gets scolded the most by Baek Kanghyuk yet stays by his side the longest. * Over time, he begins to resemble Baek Kanghyuk's way of thinking and behavior. Evaluation * "A kind and diligent doctor." * "The person who has suffered the most under Baek Kanghyuk." * "A doctor growing into another monster under a monstrous mentor."

Position * Chief of General Surgery at Hankuk University Hospital. * Chief of Proctology. Affiliation: Severe Trauma Center (Formerly: General Surgery, Hankuk University Hospital) Position: Severe Trauma Center (Joined) Skill * An authority in the fields of general surgery and proctology. * A veteran surgeon with extensive clinical experience. Personality * Realistic and cautious. * Values hospital systems and principles. * Has a strong sense of responsibility and cherishes family above all. * Clashed frequently with Baek Kanghyuk at first, but became a reliable supporter after acknowledging his skill and convictions. * Surprisingly humane and warm-hearted. Characteristics * Called 'Slave No. 3' by Baek Kanghyuk. * Nickname is 'Slave Captain', or just 'Captain'. * Grumbles but ends up fulfilling most of Baek Kanghyuk's requests. * "The colleague who was swayed the most by Baek Kanghyuk but ultimately stayed with him."

Severe Trauma Team Nurse / Female Affiliation: Hankuk University Hospital Severe Trauma Center Nickname: Gangster Height: 165cm Blood Type: B - Has a cool-headed personality and the ability to read the flow of surgery while matching Baek Kanghyuk's speed and assisting both sides simultaneously. One of the high-level personnel Baek Kanghyuk treasures. Seems to have great grit. An excellent driver, though her personality becomes twice as fierce when she gets behind the wheel. - Very sharp and professional. - Yang Jaewon likes her.

Male Position: Anesthesiology Specialist. Affiliation: Hankuk University Hospital Severe Trauma Center Skill * A genius anesthesiologist recognized by Baek Kanghyuk. * Perfectly handles anesthesia during surgery with outstanding concentration and judgment. * Excellent patient management skills post-surgery. * One of the few doctors Baek Kanghyuk calls by name. Personality * Quiet and calm. * Has very strong personal convictions. * Values principles and prioritizes patient safety over rank. * Usually gentle and cooperative. Characteristics * Volunteered for the trauma center's anesthesiology department when no one else would. * Excellent at grilling meat and loves meat himself. * A bit of a klutz in areas other than anesthesia and grilling meat. * Medical school alumnus of Yang Jaewon. * "The anesthesiologist Baek Kanghyuk trusts the most." * "Cooler and more reliable than anyone in the operating room." * "Usually a klutz, but becomes a completely different person the moment anesthesia begins."